Occurrence and molecular detection of avian coronavirus in selected live bird markets, northwestern, Nigeria

Infectious bronchitis (IB) is one of the most common highly infectious viral respiratory diseases poultry having wide geographical distribution. Yet, little known about infection in northwestern states Nigeria. In this study, a total 263 pooled cloacal and tracheal swab samples were collected from apparently healthy avian species (duck, dove, geese, guinea fowl, local chicken, ostrich, parrot, pigeon, peacock, turkey). The nine live bird markets three (Kaduna, Kano Jigawa) northwestern, Nigeria September through November 2017. Total RNAs extracted directly screened for virus (IBV) using real-time reverse transcription-polymerase chain reaction. An overall prevalence 38.0% (100/263)was recorded. IB was detected 70 % (7/10) with 100 chicken 45.9 %, duck 42.3 geese 26.6 pigeon 23.5 turkey 20.0 fowl 6.2 %. Conversely, no detection made peacock. Widespread distribution IBV observed evidence subclinical seven out ten (70 %) sampled. These harbouring may act as reservoirs an influence on ecology epidemiology disease. Continuous surveillance characterization different serotypes are recommended to inform adoption suitable vaccination strategy control measures disease Nigeria.
 Keywords: virus, Live (LBMs), Molecular detection, Nigeria, Poultry